YST (Dalian Yist Instrument Co., Ltd.)
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| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST109B-HP880 |
| Measuring Range | pH 0–14 (optimized for wastewater: pH 2–12) |
| Temperature Compensation | 0–100 °C (automatic) |
| Output Signals | 4–20 mA analog + RS485 digital (Modbus RTU) |
| Power Supply | AC 220 V ±10% / 50 Hz or DC 24 V (optional) |
| Installation Types | Immersion, Flow-through, Insertion |
| Sensor IP Rating | IP68 |
| Transmitter IP Rating | IP65/IP67 |
| Response Time | ≤3 s (to 90% of final value) |
| Sensor Housing Material | 316L stainless steel & PTFE |
| Electrode Options | Glass electrode or solid-state electrode |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST208B-CR810 |
| Measuring Range | 0.2–10 m (expandable) |
| Accuracy | ±1% FS or ±5 mm (whichever is greater) |
| Resolution | 1 mm |
| Ultrasonic Frequency | 20–50 kHz |
| Operating Temperature (Sensor) | −10°C to +60°C |
| Enclosure Rating | Sensor IP68, Main Unit IP65 |
| Output Signals | 4–20 mA analog, RS485 digital |
| Power Supply | 220 V AC or 24 V DC |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST308B-MS880T |
| Measurement Principle | Infrared Dual-Scatter Optical Detection |
| Range | 0–5000 mg/L (extendable to 0–20,000 mg/L) |
| Accuracy | ±2% FS (0–100 mg/L), ±5% FS (100–5000 mg/L) |
| Output | RS485 with Modbus RTU Protocol |
| Power Supply | DC 12–24 V, <50 mA avg. |
| Operating Temperature | −5 to +50 °C |
| Humidity | <85% RH (non-condensing) |
| Enclosure Rating | IP68 |
| Housing Material | 316 Stainless Steel + Polyoxymethylene (POM) |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST308B-MS880T |
| Measurement Range | 0–9999 mg/L (extendable to 0–50 g/L) |
| Principle | Dual-mode infrared optical sensing (880 nm LED source, combined scatter & transmission detection) |
| Accuracy | ±1% FS |
| Resolution | 3 mg/L (0–1000 mg/L), 0.01 g/L (>1000 mg/L) |
| Operating Temp. | Sensor: 0–60°C |
| Controller | −10–55°C |
| Output | 4–20 mA analog + RS485 Modbus-RTU digital |
| IP Rating | Sensor IP68, Controller IP65 |
| Power Supply | AC 85–265 V ±10% or DC 9–36 V |
| Sampling Interval | 1–30 min adjustable |
| Housing | Sensor body 316L stainless steel, Controller enclosure polycarbonate |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST809B-DO660 |
| Measurement Principle | Fluorescence Quenching at 470 nm excitation |
| Range | 0–20 mg/L (standard), 0–50 mg/L or 0–20,000 ppb (trace) |
| Accuracy | ±0.2 mg/L (0–20 mg/L) |
| Resolution | 0.01 mg/L or 1 ppb |
| Operating Temperature | −5 to 50 °C |
| IP Rating | IP68 |
| Submersion Depth | Up to 30 m |
| Compensation | Automatic temperature, barometric pressure, and salinity compensation |
| Output Interfaces | RS485 (Modbus RTU), 4–20 mA analog |
| Response Time (t₉₀) | ≤30 s |
| Fluorescent Cap Lifetime | 1–3 years |
| Drift | <1% per year |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST809B-DO660 |
| Measurement Range | 0–20 mg/L DO / 0–200% saturation |
| Accuracy | ±0.1 mg/L (0–10 mg/L), ±0.2 mg/L (10–20 mg/L) |
| Temperature Compensation | 0–60 °C (automatic) |
| Response Time (t₉₀) | ≤60 s |
| Output Signals | 4–20 mA analog + RS485 digital (Modbus RTU) |
| Power Supply | AC 220 V ±10% or DC 24 V |
| Operating Environment | 0–50 °C, ≤90% RH (non-condensing) |
| Installation Options | Submersible, Flow-through, Pipe-mount |
| IP Rating | IP68 (sensor), IP65 (transmitter) |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST809B-DO660 |
| Measurement Principle | Fluorescence Quenching (Pt-porphyrin sensor) |
| Excitation Wavelength | 470 nm |
| Emission Detection | Phase-shift analysis of red fluorescence |
| Range | 0–20 mg/L (0–20,000 ppb) |
| Accuracy | ±0.2 mg/L (0–20 mg/L), ±1 ppb + 2% (ppb range) |
| Resolution | 0.01 mg/L or 1 ppb |
| Response Time (t₉₀) | ≤30 s |
| Operating Temperature | −5 to 50 °C |
| IP Rating | IP68 |
| Submersible Depth | Up to 30 m |
| Compensation | Automatic temperature, atmospheric pressure, and salinity compensation |
| Output | RS485 (Modbus RTU), 4–20 mA analog |
| Sensor Lifetime | 1–3 years (fluorescent cap) |
| Drift | <1% per year |
| Calibration | Air-saturated water auto-calibration |
| Installation Options | Immersion, flow-through, buoy-mounted |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST820CY10 |
| Measurement Range | 0.2–10 m |
| Accuracy | ±0.5% FS |
| Resolution | 1 mm |
| Operating Temperature (Body) | −20°C to +60°C |
| Operating Temperature (Transducer) | −40°C to +80°C |
| Output Signals | 4–20 mA analog, RS485 digital (Modbus RTU protocol) |
| Power Supply | AC 220 V ±10% / 50–60 Hz or DC 24 V ±15% (selectable) |
| Enclosure Rating | IP65 (body), IP67 (transducer) |
| Display | 4–6-digit LCD, unit switching between m/cm and m³/L |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST820CY10 |
| Measurement Range | 0.2–10 m |
| Accuracy | ±0.5% FS |
| Resolution | 1 mm |
| Operating Temperature (Body) | −20 °C to +60 °C |
| Probe Operating Temperature | −40 °C to +80 °C |
| Humidity Limit | ≤95% RH (non-condensing) |
| Output Signals | 4–20 mA analog & RS485 digital (Modbus-RTU) |
| Power Supply | AC 220 V ±10%, 50/60 Hz or DC 24 V ±15% |
| Enclosure Rating | IP65 (body), IP67 (probe) |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST820CY10 |
| Measurement Range | 0.3–10 m |
| Accuracy | ±0.5% FS |
| Resolution | 1 mm |
| Operating Temperature | −20 °C to +60 °C |
| Humidity | ≤95% RH (non-condensing) |
| Output Signals | 4–20 mA analog + RS485 (Modbus-RTU) |
| Power Supply | AC 220 V ±10%, 50/60 Hz or DC 24 V ±15% |
| Enclosure Rating | IP65 (housing), IP67 (transducer) |
| Display | Backlit LCD with unit switching (m/cm, m³/L) |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | YST820CY10 |
| Price | USD 125 (FOB) |
| Measurement Range | 0.1–6 m |
| Accuracy | ±0.5% FS |
| Resolution | 1 mm |
| Operating Temperature | −20 °C to +60 °C |
| Humidity Range | ≤95% RH (non-condensing) |
| IP Rating | IP67 |
| Power Supply | DC 24 V or AC 220 V |
| Power Consumption | ≤10 W |
| Output Signals | 4–20 mA analog and/or RS485 Modbus RTU digital |
| Housing Material | ABS engineering plastic |
| Transducer Material | Polyurethane (PU) |
| Mounting Options | Adjustable bracket, threaded mount |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Principle | Electrochemical and DPD-based Spectrophotometric Methods |
| Range (Electrochemical) | 0.01–200 mg/L as Cl₂ |
| Range (Spectrophotometric) | 0.0–10.0 mg/L as Cl₂ |
| Resolution (Electrochemical) | 0.001–0.1 mg/L |
| Resolution (Spectrophotometric) | 0.01 mg/L |
| Accuracy | ±0.15% of full scale or ±0.05 mg/L (whichever is greater) |
| Response Time (T90) | ≤120 s (electrochemical), ≤2.5 min (free chlorine), ≤3.5 min (total chlorine) |
| Operating Environment | 0–60 °C, <95% RH (non-condensing), vibration-free, well-ventilated indoor space |
| Power Supply | AC 100–240 V / DC 18–36 V |
| Power Consumption | ≤120 W |
| Enclosure Rating | IP65/IP66 |
| Output Interfaces | RS-232, RS-485, 4–20 mA analog output |
| Data Storage Capacity | 14,000 records |
| Auto-calibration & Self-diagnostic Functions | Yes |
| Sampling Interval | Programmable from 1 to 999 minutes |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | 0–10 mg/L free chlorine |
| Accuracy | ±2% FS (0–5 mg/L) |
| Response Time | ≤60 s (T90) |
| Zero Drift | ≤±0.05 mg/L over 30 days |
| Span Drift | ≤±2% FS over 30 days |
| Operating Temperature | 0–50 °C |
| Relative Humidity | ≤85% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Output Signals | 4–20 mA analog output |
| Data Storage | 6-month timestamped history (local), USB export supported |
| Brand | YST (Dalian Yist Instrument Co., Ltd.) |
|---|---|
| Origin | Liaoning, China |
| Model | YST909B-CH980 |
| Measurement Range | 0–1 mg/L / 0–5 mg/L / 0–10 mg/L (selectable) |
| Resolution | 0.001 mg/L (low range), 0.01 mg/L (mid/high range) |
| Repeatability | ≤1% FS |
| Response Time (T90) | ≤60 s |
| Operating Temperature | Indoor: 0–50°C |
| Outdoor Explosion-Proof | −10–60°C |
| Humidity | ≤90% RH (non-condensing) |
| Sample Temperature | 0–50°C |
| Sample Pressure | 0.1–0.6 MPa |
| Output Signals | 4–20 mA analog, RS485/RS232 (Modbus RTU) |
| Alarm Outputs | 2 relay outputs (NO/NC, 220 VAC / 5 A) |
| Power Supply | AC 220 V ±10%, 50 Hz or DC 24 V |
| Sampling Modes | Flow-through (50–300 mL/min) or Immersion |
| Accuracy | ±2% FS (full scale) |
| Zero Drift (30 days) | ≤±0.05 mg/L |
| Span Drift (30 days) | ≤±2% FS |
| Auto Temperature & pH Compensation | Yes |
| Data Storage Capacity | >80,000 records |
| Update Rate | Up to 1 Hz |